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Principal Engineer Jobs

1627 Job Offers

Principal Technical Safety Engineer – Software Development
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Principal Technical Safety Engineer role in Warrington, UK, blending software development with risk management. You'll lead QRA, CFD, and RAM studies while maintaining and developing internal software using Python, C#, and .NET. Requires 8+ years in technical safety and full-stack skills. Benefit...
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United Kingdom , Warrington
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Not provided
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Risktec Solutions
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Principal Product Engineer
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Principal Product Engineer role in Carrollton, US, seeking a technical leader with 8+ years in C# and .NET to architect scalable backend, mobile, and desktop solutions. Drive cross-platform development, mentor engineers, and optimize performance across cloud and distributed systems. Benefits incl...
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United States , Carrollton
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Robert Half
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Principal Civil Engineer
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Principal Civil Engineer opportunity in Hamilton, NZ, with a leading multidisciplinary consultancy. Lead land development and infrastructure projects while mentoring junior engineers. Requires 10+ years’ NZ consultancy experience, CPEng or working towards, and strong client-facing skills. Benefit...
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New Zealand , Hamilton
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160000.00 - 190000.00 NZD / Year
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84 Recruitment Limited
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Principal Systems Engineer
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Seeking a Principal Systems Engineer to support a government customer in Annapolis Junction, MD. This role requires 18-20+ years of systems engineering experience with a Bachelor’s degree or higher, plus expertise in Linux, Kubernetes, Docker/podman, and security scanning. You will lead dataflow ...
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United States , Annapolis Junction
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2HB
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Principal Fire Engineer
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Principal Fire Engineer role in Manchester offering hybrid working and a clear path to Associate level. Lead complex fire strategies, mentor junior staff, and act as technical authority on high-profile UK projects. Requires Chartered status (IFE or equivalent), significant consultancy experience,...
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United Kingdom , Manchester
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65000.00 - 85000.00 GBP / Year
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Brandon James
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Senior / Principal Mechanical Engineer
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Senior / Principal Mechanical Engineer sought to author critical Design Substantiation Reports for nuclear safety. This client-seconded role demands a questioning attitude, safety case expertise, and a Chartered Engineer status (or equivalent). Join ACTEMIUM Design UK, part of VINCI Energies, in ...
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United Kingdom , Chorley
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VINCI Energies
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Principal Product Engineer
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Seeking a **Principal Product Engineer** in Carrollton, TX to lead the design of scalable, high-performance software platforms. You will architect complex systems using **C#, .NET**, and cross-platform frameworks like **.NET MAUI**, while mentoring engineers and driving technical strategy. This r...
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United States , Carrollton
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Robert Half
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Principal Python Software Engineer
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Principal Python Software Engineer sought by a growing Financial Services client in Boston (hybrid). Leverage 8+ years of Python/Django/Flask experience to lead design of large-scale, high-performance distributed systems on AWS. Drive cloud-native solutions, Infrastructure-as-Code (Terraform), an...
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United States , Boston
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220000.00 - 250000.00 USD / Year
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Apollo Solutions
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Principal Software Engineer- Mobile
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Principal Software Engineer (Mobile) sought for Microsoft’s Office Android Shared Team in Hyderabad. You will architect core components using Java, Kotlin, and C++, driving AI-enabled UX innovation for Word, Excel, and PowerPoint. Requires 9+ years of experience, deep Android architecture knowled...
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India , Hyderabad
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Microsoft Corporation
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Principal Software Engineer
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Principal Software Engineer role at Microsoft in Redmond, WA, driving innovation in AI agents within Copilot Studio. Lead design of scalable, secure platform capabilities for Digital Workers, leveraging Azure, M365, and Power Platform. Requires 6+ years engineering experience with C, C++, C#, Jav...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Principal Software Engineer at Microsoft Security in Redmond, WA. Architect the next-generation Conditional Access engine processing millions of policy evaluations per second. Requires deep expertise in distributed systems, C#/.NET, identity protocols (OAuth2/OIDC), and Zero Trust principles. Dri...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer - Margin Technology
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Principal Software Engineer sought for Citi’s Margin Technology team in London. Design and build high-scale distributed systems using Java, Python, or React, with AWS, Kafka, and Kubernetes. Drive innovation in global finance, shaping automated platforms with a focus on clean code and TDD. Benefi...
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United Kingdom , London
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Citi
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Principal Software Engineer - Edge AI
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Principal Software Engineer – Edge AI role in Herzliya, Israel. Lead architecture and system design for AI on managed hardware, optimizing for connected/disconnected operations. Requires 10+ years of software engineering, K8S expertise, and deep AI stack knowledge. Drive high-impact technical out...
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Israel , Herzliya
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Microsoft Corporation
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Principal Software Engineer
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Principal Software Engineer role in Tokyo, Japan, leading architecture for Microsoft’s Mico AI experience. Drive full-stack development across iOS, Android, and web, owning 3D rendering, LLM orchestration, and adaptive personalization. Requires 8+ years in C++, C#, or Python, with AI expertise an...
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Japan , Tokyo
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Microsoft Corporation
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Principal Manufacturing Engineer
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Principal Manufacturing Engineer sought in Hayward, CA to drive automation and process improvements in a medical device environment. Key responsibilities include troubleshooting PLCs, robotics, and high-speed packaging systems, plus leading capital projects. Requires a BS/MS in Engineering with 5...
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United States , Hayward
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112000.00 - 154000.00 USD / Year
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Baxter
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Principal Manufacturing Engineer
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Principal Manufacturing Engineer role in Hayward, CA, driving automation and process improvements in a life-saving medical device environment. You will troubleshoot PLCs, robotics, and vision systems while leading capital projects. Requires a B.S. in Engineering with 5+ years of experience in pha...
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United States , Hayward
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112000.00 - 154000.00 USD / Year
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Baxter
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Principal Mechanical Engineer
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Principal Mechanical Engineer sought for Primero Americas in Montreal, Toronto, Vancouver, or Salt Lake City. Lead mechanical design for mineral processing EPC/EPCM projects, leveraging 12+ years of experience with crushers, mills, and conveyors. P.Eng. or PE licensure preferred. Enjoy competitiv...
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Canada , Montreal, Toronto, Vancouver
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Primero Group
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Principal Software Engineer - ISE
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Principal Software Engineer role in London with Microsoft’s ISE team. You’ll co-develop cloud-based AI solutions alongside enterprise customers, using C#, Python, or Java. Requires consultative experience, cross-functional collaboration, and up to 25% travel. Enjoy a competitive benefits package ...
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United Kingdom , London
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Microsoft Corporation
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Principal Mechanical Design Engineer
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Palo Alto Networks seeks a Principal Mechanical Design Engineer in Santa Clara, CA. You will lead NPI development, collaborating with cross-functional teams on sheet metal, plastic, and die cast designs. Requires 8+ years of experience, SolidWorks/ProE expertise, and strong tolerance analysis ski...
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United States , Santa Clara
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143100.00 - 231475.00 USD / Year
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Palo Alto Networks
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Principal AI Software Engineer
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Principal AI Software Engineer sought by AMD to lead OneROCm software stack innovation across Instinct, Radeon, and Ryzen platforms. This hands-on role requires deep expertise in GPU architectures, AI/ML full-stack development, and hardware/software co-design. Drive next-gen products in San Jose,...
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United States , San Jose
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AMD
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About the Principal Engineer role

Explore the pinnacle of technical leadership with Principal Engineer jobs. A Principal Engineer is a master-level technical expert and strategic leader within an engineering organization. This is not merely a senior role; it represents the apex of an individual contributor technical track, where influence, architectural vision, and deep expertise converge to shape the technological future of a company. Professionals in these roles are the go-to authorities for the most complex, high-impact challenges, setting technical standards and driving innovation across multiple teams or the entire organization.

The common responsibilities of a Principal Engineer are vast and critical to long-term success. Typically, they involve defining and driving the long-term technical strategy and architectural vision for major platforms or product suites. They are responsible for researching, prototyping, and selecting technologies that will scale to meet future business needs. A core part of their duties includes leading the design and implementation of complex, cross-functional systems, ensuring they are resilient, secure, and efficient. They serve as the ultimate escalation point for critical production issues, conducting deep-dive analysis and root cause investigations to resolve systemic problems. Furthermore, Principal Engineers have a significant mentorship and governance function, actively coaching senior and staff engineers, establishing best practices, and conducting rigorous code and design reviews to maintain exceptional quality across all engineering outputs. They are also key collaborators, working closely with engineering managers, product leaders, and enterprise architects to align technical execution with business objectives.

The typical skills and requirements for these high-level positions are extensive. A bachelor's or master's degree in computer science, engineering, or a related field is common, though equivalent demonstrable experience is often acceptable. Most roles require a minimum of 10+ years of progressive, hands-on software development or infrastructure engineering experience, with a significant portion spent in lead or architecture-focused positions. Essential technical skills include mastery of relevant programming languages and frameworks, profound knowledge of system design patterns and distributed architectures, and expertise in cloud platforms like AWS, Azure, or GCP. They must possess exceptional analytical and problem-solving abilities to deconstruct ambiguous, complex problems. Beyond technical prowess, superior soft skills are non-negotiable; this includes outstanding communication to articulate technical vision to both technical and non-technical stakeholders, proven leadership and influence without formal authority, and strategic business acumen. For those seeking to define technological frontiers and mentor the next generation of experts, Principal Engineer jobs offer a challenging and highly rewarding career path at the forefront of innovation.